如何添加到我在Android应用程序上创建的文件？

Question

this is my code:

FileOutputStream fOut = openFileOutput("things", Context.MODE_PRIVATE); 
fOut.write(thing.getBytes());

everytime i go through this method it erases the previous data in the file and overwrites it with the new one. I don't want this to happen because I want the text to be added Thanks for your help.

Answer 1

Add the flag MODE_APPEND :

FileOutputStream fOut = openFileOutput("things", MODE_APPEND);
fOut.write(thing.getBytes())

other option would be using of course the append() method:

 FileOutputStream fOut = new FileOutputStream(myFile,true);
 OutputStreamWriter myOutWriter = new OutputStreamWriter(fOut);
 myOutWriter.append("Something new!\n");
 myOutWriter.close();
 fOut.close();

Answer 2

您需要在openFileOutput调用中将MODE_APPEND标志（按位或）添加到MODE_PRIVATE中